Question: What are the atmosphere which start with the letter b
Paraphrase: What are the radiometric dating which begin with the letter d
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q427085 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'b')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: ball lightning, ball lightning